While peeping up girls' skirts at a local shopping mall, Onizuka meets a girl who agrees to go out on a date with him. Onizuka's attempt to sleep with her fails when her current "boyfriend," her teacher, shows up at the love hotel they are in and asks her to return to him. The teacher is old and unattractive, but this teacher has enough influence over her that she leaps from a second story window and lands in his arms.

Onizuka, seeing this display of a teacher's power over girls, decides to become one himself, and discovers three important things:

1. He has a conscience and a sense of morality. This means taking advantage of impressionable schoolgirls is out ... but their unusually attractive mothers are a different matter.
2. He enjoys teaching.
3. He hates the systems of traditional instruction, especially when they have grown ignorant and condescending.